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Médias (1)

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Autres articles (13)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

Sur d’autres sites (3084)

  • Error while concatenating audio files with ffmpeg

    17 janvier 2023, par Rub

    While concatenating audio files with

    


    ffmpeg -safe 0  -f concat 
-segment_time_metadata 1 
-i {m3u_file_name} 
-vf select=concatdec_select 
-af aselect=concatdec_select,aresample=async=1 {ogg_file_name} 


    


    I get the following output

    


    ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
  configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Input #0, concat, from 'fm3u.m3u':
  Duration: N/A, start: -0.006500, bitrate: N/A
    Stream #0:0: Audio: opus, 48000 Hz, mono, fltp
Stream mapping:
  Stream #0:0 -> #0:0 (opus (native) -> vorbis (libvorbis))
Press [q] to stop, [?] for help
Output #0, ogg, to 'fout.ogg':
  Metadata:
    encoder         : Lavf57.83.100
    Stream #0:0: Audio: vorbis (libvorbis), 48000 Hz, mono, fltp
    Metadata:
      encoder         : Lavc57.107.100 libvorbis
[opus @ 0x558b2c245400] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0x558b2c245400] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0x558b2c245400] Error parsing the packet header.
...
...
Error while decoding stream #0:0: Invalid data found when processing input
[opus @ 0x558b2c245400] Error parsing the packet header.
Error while decoding stream #0:0: Invalid data found when processing input
size=      47kB time=00:00:10.84 bitrate=  35.2kbits/s speed=4.38x    
video:0kB audio:42kB subtitle:0kB other streams:0kB global headers:3kB muxing overhead: 10.251080%
/fout.ogg


    


    The final audio sounds good.

    


    ffprobe on the 2 participating files looks like

    


    # ffprobe <file>&#xA;&#xA;ffprobe version 3.4.8-0ubuntu0.2 Copyright (c) 2007-2020 the FFmpeg developers&#xA;  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)&#xA;  configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared&#xA;  libavutil      55. 78.100 / 55. 78.100&#xA;  libavcodec     57.107.100 / 57.107.100&#xA;  libavformat    57. 83.100 / 57. 83.100&#xA;  libavdevice    57. 10.100 / 57. 10.100&#xA;  libavfilter     6.107.100 /  6.107.100&#xA;  libavresample   3.  7.  0 /  3.  7.  0&#xA;  libswscale      4.  8.100 /  4.  8.100&#xA;  libswresample   2.  9.100 /  2.  9.100&#xA;  libpostproc    54.  7.100 / 54.  7.100&#xA;Input #0, ogg, from &#x27;f1.ogg&#x27;:&#xA;  Duration: 00:00:01.08, start: 0.000000, bitrate: 34 kb/s&#xA;    Stream #0:0: Audio: opus, 48000 Hz, mono, fltp&#xA;&#xA;# ffprobe <file>&#xA;ffprobe version 3.4.8-0ubuntu0.2 Copyright (c) 2007-2020 the FFmpeg developers&#xA;  built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)&#xA;  configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared&#xA;  libavutil      55. 78.100 / 55. 78.100&#xA;  libavcodec     57.107.100 / 57.107.100&#xA;  libavformat    57. 83.100 / 57. 83.100&#xA;  libavdevice    57. 10.100 / 57. 10.100&#xA;  libavfilter     6.107.100 /  6.107.100&#xA;  libavresample   3.  7.  0 /  3.  7.  0&#xA;  libswscale      4.  8.100 /  4.  8.100&#xA;  libswresample   2.  9.100 /  2.  9.100&#xA;  libpostproc    54.  7.100 / 54.  7.100&#xA;Input #0, ogg, from &#x27;f2.ogg&#x27;:&#xA;  Duration: 00:00:05.00, start: 0.000000, bitrate: 6 kb/s&#xA;    Stream #0:0: Audio: vorbis, 48000 Hz, mono, fltp, 80 kb/s&#xA;    Metadata:&#xA;      ENCODER         : Lavc57.107.100 libvorbis&#xA;</file></file>

    &#xA;

    What is the reason of the error ?

    &#xA;

  • avformat/movenc : write the colr atom by default

    13 avril 2020, par Michael Bradshaw
    avformat/movenc : write the colr atom by default

    The write_colr flag has been marked as experimental for over 5 years.
    
It should be safe to enable its behavior by default as follows :
    

      - Write the colr atom by default for mp4/mov if any of the following :
    
     - The primaries/trc/matrix are all specified, OR
    
     - There is an ICC profile, OR
    
     - The user specified +write_colr
    
  - Keep the write_colr flag for situations where the user wants to
    
    write the colr atom even if the color info is unspecified (e.g.,
    
    http://ffmpeg.org/pipermail/ffmpeg-devel/2020-March/259334.html)
    

    This fixes https://trac.ffmpeg.org/ticket/7961
    

    Signed-off-by : Michael Bradshaw <mjbshaw@google.com>
    • [DH] libavformat/movenc.c
    • [DH] tests/ref/fate/copy-trac236

  • sw_scale : Add specializations for hscale 8 to 19

    28 octobre 2022, par Hubert Mazur
    sw_scale : Add specializations for hscale 8 to 19

    Add arm64 neon implementations for hscale 8 to 19 with filter
    
sizes 4, 4X and 8. Both implementations are based on very similar ones
    
dedicated to hscale 8 to 15. The major changes refer to saving
    
the data - instead of writing the result as int16_t it is done
    
with int32_t.
    

    These functions are heavily inspired on patches provided by J. Swinney
    
and M. Storsjö for hscale8to15 which were slightly adapted for
    
hscale8to19.
    

    The tests and benchmarks run on AWS Graviton 2 instances. The results
    
from a checkasm tool shown below.
    

    hscale_8_to_19__fs_4_dstW_512_c : 5663.2
    
hscale_8_to_19__fs_4_dstW_512_neon : 1259.7
    
hscale_8_to_19__fs_8_dstW_512_c : 9306.0
    
hscale_8_to_19__fs_8_dstW_512_neon : 2020.2
    
hscale_8_to_19__fs_12_dstW_512_c : 12932.7
    
hscale_8_to_19__fs_12_dstW_512_neon : 2462.5
    
hscale_8_to_19__fs_16_dstW_512_c : 16844.2
    
hscale_8_to_19__fs_16_dstW_512_neon : 4671.2
    
hscale_8_to_19__fs_32_dstW_512_c : 32803.7
    
hscale_8_to_19__fs_32_dstW_512_neon : 5474.2
    
hscale_8_to_19__fs_40_dstW_512_c : 40948.0
    
hscale_8_to_19__fs_40_dstW_512_neon : 6669.7
    

    Signed-off-by : Hubert Mazur <hum@semihalf.com>
    
Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DH] libswscale/aarch64/hscale.S
    • [DH] libswscale/aarch64/swscale.c

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